Door-operating mechanism



June 12, 1923. 1,458,752

' A; J. GALLANT DOOR OPERATING MECHANI SM Filed Feb. ll 1922 IIIIIIIIIIIIIIIIIIIIM.

3/ l4- n Fig.1.

In z eniorz Patented June 12, 1923.

UNITED, STATS 1,458,752 PATENT 'QF'FI-CEu;

ALPHEE J. GALLANT, OF PORTLAND, MAINE.

noon-ornaerme MECHANISM.

Application filed February 11, 1922. 7 Serial mfsaasso.

To all whom it may concern:

Be it known that I, ALPHEE J. GALLANT, a citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented new and useful Improvements-in Door-Operating Mechanism, of which the following is a specification.

My invention relates to a mechanism for opening and closing the lineon an electric lighting circuit automatically, by the opening and closing of a door. i

I am aware that there has, heretofore, been devices placed on the market which attain this object, but in allcases, so far as I am aware, these devices have broken; in directly on the main feed lines, necessitating live, wiring to the door-itself. This not only adds a fire hazard, but it is quite expensive to install, particularly if the apparatus is to be put'in place after completion of all wood and plaster work.

My mechanism may be set up in a very short time,-is therefore inexpensive to install; it is adapted to be used in conjunction with any present-clay socket using the chain pull principle for operating same, and can be quickly disengaged from the lighting fixture when it may be desirable to use the latter independently.

By referring to the drawing accompanying these specifications the design of the apparatus can be clearly seen.

Fig. 1 is a plan showing door in closed position (full lines) and swung partly open (dot and dash lines) Fig. 2 is a side View, showing door swung open part way, and bell-crank and connecting wire in one of the extreme positions; Fig. 3 is a view of the mechanism in perspective; Fig. 4 a sectional view through bell-crank and bracket on line y-y, Fig. 2; Fig. 5 is an enlarged view of adjustable door contact; Fig. 6 an assembly of mechanism showing how adjustability is obtained; and Fig. 7 a view showing door closing and contact pin sliding under pawl. Similar numerals refer to similar parts in all the several views.

In Fig. 2, 1 is a wall. 3 represents a door, shown closed,-and within door casing 4. Mounted on wall 1 is a bracket 5, bifurcated at 6. On outer end of 6 is pivot pin 7, supported on which and held between the bifurcated arms 6 is bell-crank lever 8.

On the lower or vertical arm of 8 is pivoted a pawl 9, a projecting part 10, on the upper end of which holds pawl in alignment with arm 8 when pressure is applied to face of pawl at L, and in conjunction with spring 11 keeps pawl normally in this position except when pressure is applied in an opposite direction, as will be hereinafter referred to. v

Secured to side of door, near, the top, is

a block 12, in a hole 13, drilled in the top of which is a slidable memberjor contact pin 14. This pin isheld securely in hole 13 by means of set screw 15, but is subject to adjustment vertically. Through a hole 16 guide pulley, and soon to a pin 20. running fit for 7 isjprovidedin arms 6-6 :and extending outward from.

these arms on one side is mounted on pin 7 a spiral spring 21, one end of which being secured to pin 7 and the other end to arm 6, keeps stop 22 on bell-crank lever 8, normally in close contact with under side of arm 6, which establishes the extreme left hand movement (as seen on drawing) of bell-crank lever 8.

In operation, the door 3, opening, will bring contact pin 14 up to pawl 9, "striking face L of same, and the door continuing to open further will shortly be in a'position as shown in Fig. 2, where pawl 9 is about to drop off from top of contact pin 14. As the door continues to open the pawl 9 will drop off contact pin 14 and assume original position; thus the chain pull completes'two cycles of movement,-out and in, this style of socket being of the type which is provided with a recoilin device which automatically pulls the chain back within itself after release of the force which pulled it out.

At this stage the light is on and the door open. Closing the door will not affect position of parts, except as seen at Fig. 9, when on the return movement of contact pin l4 it strikes the pawl 9 on side marked R, sim ply lifting it and passing by to closed position of door.

The next time the door is opened the process is repeated, only, the opening of door will turn off the light, already 'on. In other words,two movements of door, open and close','will"turn on the light; then two more movements of door, open-and close,

lowered. Now by reference to Fig.6 it will be observed that top of contact pin 14; travels in'a'horiz ontal line 23 -23, while lower end of pawl 9 moves: on are 2t24e, the separating" point being at intersection of these lines, or" 25. p

By raising pin 1% will be seen that pawl remains longenincontact with pin,- thus increasing stroke of bell-crank, and pull on chain on socket; and by lowering the pin 14 in the block 12 the reverse takes place,or a shorter stroke.

My'mechanism is desigiied so as to operate the socket switches independently of the automatic feature, and for'this purpose I provide a hook onend of wire or rope 17, which can be readily detached from chain on' sock et' and the latter operated by means of drop cord withhandle attached;

Ha- 1mg thus described my invention, I claim: v

In a door operating mechanism, of the class described, th'ecombination with a door swingingly mounted inado'o'r-casing, of a member rigidly secured to and mounted near the top of said door, a hole drilled in the top of said member, a pin seated in said hole, means for rigidly holding said pin in said hole indifferent vertical positions Within said hole, a bifurcated bracket secured to the door casing adjacent the top of said door, and centrally positioned over and in alignment with said member'on said door when the latter is in closed position within said door casing, a'bell crank lever pivoted within the bifurcations ofsa'id bracket, means for securing a cable orwire rod to the end of one of the arms of the said bell-crank lever, a projecting stoponthe inner edge of said arm to bear on said bifurcated bracket and restrict'the movement, in one direction, of said arm, a spring operating to yieldingly hold; said stop-against said bracket, a pawl pivotally hung to the end of the other arm of the said bell-crank lever, a spring adapted to hold the heel of said pawl yieldingly against the'armof said bell-crank leverand re'strain the move ment of said'pawl, around'its axis, in one direction and allow of certain movement in the opposite direction, substantially as d scribed.

ALPHEE J'. GALLANT. 

